Control means for hydrocarbon burners



Se t. 24, 1929. BREESE' JR 1,729,060

CONTRCL MEANS FOR HYDROCARBON BURNERS Filed Nov. 17, 1927 2 Sheets-Sheet 1 2 E J F B l IDOOOOOO 2 Sheets-Sheet 2 J. L. BREESE. JR

CONTROL MEANS FOR HYDROOARBON BURNERS Filed Nov. 17, 1927' Sept. 24, 1929.

Patented Sept. 24, 1929 UNITED STATES PATENT OFFICE JAMES L. BREESE, JR., OF CHICAGO, ILLINOIS, ASSIGNOR TO OIL DEVICES CORPORA- TION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS CONTROL MEANS FOR HYDROCAR BON BURNERS Application filed November 17, 1927.. Serial No. 233,786.

My invention relates to a fuel control for use with a hydrocarbon burner and has for a particular purpose the provision of means for controlling the flow of a liquid hydrocarbon fuel. Another purpose is the provision of magnetically operated controlling means for ensuring a quick operation of the valve controlling the flow of the liquid hydrocarbon fuel. Another object is the provision of-therv mostatic valve controlling means for use with.

' said magnetic member. Other objects will appear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically in the accompanying drawings wherein- Figure 1 is a vertical section of my device with parts in elevation;

Figure 2 is a partial vertical section of my controlling device on an enlarged scale;

Figure 3 is an enlarged section along the line 33 of Figure 2;

Figure 4 is a section along the line 4-4 of Figure 2 and Figure 5 is a section along the line Fi ure 2. 4 v

ike parts are indicated by like symbols throughout the specification and claims.

A generally indicates any suitable stove and a bottom member A 7 B is an' outer cylindrical section resting upon the bottom member A Resting upon ing the downwardly depending centering flange B and the inner depending flange B B is a centering flange projecting from the upper face'of the ring and adapted to position or center the cylindrical radiator member C which rests upon the ring.

' Within the drum B is the mixing drum D, the upper edge of which'engages the bottom of the partitionmember B and is centered by the flange B It is herein shown as having a concave bottom I) in communication with the fuel-inlet pipe D The wall of the mixing drum D is penetrated by a plurality of air inlets D I In communication with the fuel inlet pipe- D and mounted thereon by means of the having for example the supporting legs A the upper edge is the partition ring B havscrewthreaded portion D is the float chamber generally indicated as E.

Referring more particularly to the float chamber as shown in Figure 2, E is the fuel supply line in communication with the initial admission chamber E in which is posi-. tioned the strainer E yieldingly thrust upwardly by the spring E against the abutment E E9 is a screwthreaded removable plug which engages the spring E and which permits removal of the strainer E and access to the chamber E E is a fuel passage extending upwardly from said fuel chamber and controlled by a valve member F. This valve member is pivoted to the end of the lever F which in turn is pivoted as at F closely adj acent its connection with the valve member F. Its opposite end is downwardly turned as at F and is secured to the float F in the float chamber E". It will be understood that when the level of the oil in the float chamber is. below the predetermined normal, oil flows through the passage E and the passage E and escapes over the ledge E to the float chamber proper. F is a shield, associated with the valve F and adapted to prevent any sgbstantial upward gush of the inflowing oil. At any predetermined level of the oil, the float, by means of its associated lever F will close the valve F.

The fuel line D is rigidly connected with the downward projection or boss G positioned on the side of the float chamber opposite to the inletchamber E It is provided with an aperture G in opposition to the end of the line D, access to which may be had by removing the screw G In communication with the space G is a lateral duct Gr which in turn communicates with the vertical aperture G. (i is another vertical aperture directly in communication with the space G Screw threaded in the apertures G, G are the valve cylinders G G in the lower ends of which are screwthreaded the valve seats G The valve cylinders Gr Gr are apertured as at Gr to receive the oil passing through the circular screen members G which are held in position by tension springs G Adjustment of the valve stem G in relation with the valve seat G is intended to be made by manual turning of the member G.

H is a valve stem slidable in the bearing member H which has the screwthreaded por- 5 tion 11 threaded into the upper end of the valve cylinder G Mounted upon the upper end of the valve stem H is the member H. Upward movement of the stem H is limited by-a flange orstop I-I, adjustment of the valve excursion being obtainable by rotation of the screwthreaded member H The member H has a flat bottom portion H' which is in frictional engagement with one of the tension springs G and an upwardly extending annular flange H, slotted as at H to receive and guide the ends J of the magnet J. The magnet herein shown is in the form of a horseshoe, but any other suitable form may be employed. 20 -K is an upwardly extending stem mounted upon the float chamber housing E, having one end K bent to form a support for mounting any suitable thermostatic leaf K, herein shown as held in position by means of a bolt K". K indicates an adjusting screw. Suspended on one end of the thermostatic leaf K by any suitable means is themagnet J. The suspending means may consist for example of a screw K and nut K supporting a U-shaped strip K in which the magnet J is held by means of a pin K.

It will be understood that when the leaf K bends to the dotted line position shown in Figure 5 in response to a drop in temperature, the ends J J ofthe magnet J will attract the member H associated with the valve stem H, thus lifting the valve stem from its seat G and allowing oil to flow to. the fuel line D.

M generally indicates a housing which may be attached to the float chamber E by screws "M. I have shown the housing as having upwardly extending walls M surrounding part of the float chamber and the upwardly projecting valve controlling apparatus, an outwardly extending portion M covering the part of the exposed float chamber E and downwardly and inwardly inclined walls M and bottom enclosure M, having associated therewith a horizontally extending shell or passage M of any suitable sha e in communi-' cation with the drum B. The ousing is open at the top, as at M to permit air to have free access to the drum B, as shown by arrows in Figure 1.

It will be realized that whereas I have described and shown a practical and operative device nevertheless many changes might be made in size, sha e, number and disposition of parts without eparting from the s irit of my invention. I therefore wish my escription and drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specific showing.

The use and operation of my invention are as follows V In the development of small portable or semi-portable or easily moved heating units for the burning of liquid hydrocarbons, such as used for heating rooms, garages and the like, I have found it racticalto position the valve control means or controlling the flow of liquid hydrocarbons ,closely adjacent the burner or stove. It is essential in efiiciently operating such burners to' have a. steady flow of liquid hydrocarbon enter the mixing chamber D, to procure a complete combustion for heating purposes. a

I propose to adjust the manual operated valve stem G in relation to its valve seat G9 to allow a sufficient amount of oil to enter the mixing chamber to support a small flame. To efliciently operate the main valve stem H controlling the main fuel supply, I employ magpetic means, the operation of which is as folows.

At a predetermined temperature the thermostatic control leaf K, adjusted by means of the screw K, takes the position as shown in full lines in Fi ure 5. When the temperature' drops, said .t ermostatic leaf K controlling the magnet J flexes to the position shown in dotted lines. The magnet will attract the disc H associated with the valve stem H, and thus will lift the valve stem from its seat and allow a predetermined-flow of liquid hydrocarbons through the passages G G? and the pipe D to the mixin chamber D. When the temperature rises the thermostatic leaf K will return to its original position, lifting the magnet. It will be understood that the valve stem will be held in such position until the spring action of the thermostatic leaf K will overcome the force of the ma net and pull awayfrom the disc H, thus roppin the valve stem and closing the valve seat. I

have positioned the thermostatically operated controlling means within the air passage leading to the drum B, thus placingthe ther- 110 .mostatic leaf spring in the d rect path of the incomin air current. I

g It wilbe observed that the employment of the magnet, in association with the thermostatic leaf, provides a rapid opening and closing of the valve as contrasted to the relatively gradual regulation which is obtained by the employment of a thermostatic leaf alone. Thus when the leaf Kflexes downwardly toward the disc H on the valve stem H, at a certain point the force'of the magnet will lift or snap the valve stem upwardly, completely opening the aperture G Similarly, when the leaf K flexes back to its original horizontal position, the flange'H prevents further upward movement of the valve stem, and the valve is finally dropped b the magnet, as the magnet is drawn away y the continued upwar flexing of the leaf. It is of great advantage, in the operation of the burner Which'only intermittently reaches its maximum, to avoid the intermediate stages of delivery of fuel. The present apparatus provides a predetermined minimum of fuel flow,

regulated by the valve stem G and a maximum flow, controlled by the valve stem H, which is either fully opened or completely shut.

' I claim:

1. In a fluid control valve, a valve seat, a valve and valve stem opposed thereto and means for withdrawing said valve from said seat, including a permanent magnet, and a thermostatic member associated with said magnet, and means for limiting the movement of said valve from said valve seat in response to the force of said magnet.

2. In a control for liquid fuel, a fuel supplychamber, an outlet passage from said chamber and a valve seat associated therewith, a valve opposed to said valve seat, and means for lifting it therefrom, including a permanent magnet and a thermostatic member associated with said magnet, and means for breaking the connection between valve and magnet at a predetermined point in the withdrawal of the ma net.

3. In a control for liquid fuel, a fuel supply chamber, an outlet passage from said chamber and a valve seat associated there mostatic means for approaching it to and withdrawing it from said valve, and an air passage, extending about said valve and fuel downwardly about said valve and in com-' munication with said burner.

8. In combination with a hydrocarbon burner including a mixin chamber, a fuel line extending to said mixing chamber, a

it, including a magnet and thermostatic means for approaching it to and withdrawing it from said valve, said thermostatic means being in the line. of air supply to said burner.

Signed at Chicago, county of Cook, and State of Illinois, th1s 14th day of November,

JAMES BREESE, JR.

, with, a valve opposed to said valve seat, and

means for lifting it therefrom, including a permanent magnet adapted to be approached to said valve and means for approaching it thereto and withdrawing it therefrom, and guiding means for said magnet 4. In a control for liquid fuel, a fuel supply chamber, an outlet passage from said chamber and a valve seat associated therewith, a valve opposed to said valve seat, a valve stem associated with said valve, a stop member on said valve stem and means forliftin'g said valve from said valve seat, including a permanent magnet and thermostatic member adapted to approach said magnettoward said valve stem and to withdraw it therefrom in response to fluctuations of temperature, said sto being positioned to break the connection etween valve and magnet at a predetermined point in the withdrawal of the magnet.

5. In combinatmn with a hydrocarbon burner including a mixing chamber, afuel' line extending to said mixing chamber, a valve in said line and means for controlling it, including a permanent magnet and thermostatic means for approaching it to and withdrawing it from said valve, and an air passage surrounding said valve and extendmg to said burner.

6. In combination with a hydrocarbon burner including a mixing chamber, a fuel line extending to said mixing chamber, a valve 1n sald line and means for controlling it, including a permanent magnet and thervalve in said line and means for controlling, 

